package com.rmb.utils;

import lombok.extern.slf4j.Slf4j;
import org.apache.xmlbeans.impl.xb.xsdschema.Public;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import java.net.InetAddress;
import java.net.UnknownHostException;


/**
 * @author ZhaoMuYang
 */
@Slf4j
@Component
public class IpInfoUtil {
    private static final String UNKNOWN="unknown";
    private static final String IP="127.0.0.1";
    private static final Integer LENGTH=15;
    /**
     * @param request
     * @return
     */
    public String getIpAddr(HttpServletRequest request) {

        String ip = request.getHeader("x-forwarded-for");
        if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
            if (IP.equals(ip)) {
                //根据网卡取本机配置的IP
                InetAddress inet = null;
                try {
                    inet = InetAddress.getLocalHost();
                } catch (UnknownHostException e) {
                    e.printStackTrace();
                }
                ip = inet.getHostAddress();
            }
        }
        // 对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割
        String str=",";
        if (ip != null && ip.length() > LENGTH) {
            if (ip.indexOf(str) > 0) {
                ip = ip.substring(0, ip.indexOf(","));
            }
        }
        String str1="0:0:0:0:0:0:0:1";
        if(str1.equals(ip)){
            ip = "127.0.0.1";
        }
        return ip;
    }



}
